Effects of Silicon Powder Size on the Processing of Reaction-Bonded Silicon Nitride

Authors

  • Kittima Sillapasa Department of Industrial Engineering, Ubonrajathanee University
  • Sawai Danchaivijit Department of Metallurgical Engineering, Chulalongkorn University
  • Kuljira Sujirote Nation Metal and Materials Technology Center

Keywords:

Reaction-bonded silicon nitride (RBSN), RBSN, Nitridation, Mechanical properties

Abstract

The effects of silicon powder size on the processing of reaction-bonded silicon nitride (RBSN) were investigated by using three silicon powders of 3, 6 and 12 mm in average size. The procedure for processing of RBSN body was as follows: compacting the silicon powder with uniaxial press at 72 MPa and then cold isostatic press (CIP) at 300 MPa; pre-sintering the green compact at 1200 oC in argon atmosphere for 3 hrs; then nitriding the preform body at 1500 oC in nitrogen atmosphere for 3 hrs. The physical and mechanical properties were measured. From the results, bulk density, hardness, young’s modulus and flexural strength are increased with decreasing the silicon powder size. The mechanical properties vary with density, % porosity and a-Si3N4 content.

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References

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Neil, N. A., and Russell, L. Y.1992. Silicon Nitride. Ceramic Bulletin. 71 (5).

Kanyatip, T., Kuljira, S., and Sawai, D. 2002. Machinability of Heat Treated Silicon Powder Compacts. Journal of Metals, Materials and Minerals 11 (2) : 1-7.

Charles, P. G., and Donald, R.M.1997. Determination of Phase Constant of Si3N4 by X-Ray Diffraction Analysis. Ceramic Bulletin 56 (9) : 777-780.

Jennings, H.M. 1983. Review on Reactions between silicon and nitrogen Part 1 Mechanisms. Journal of Materials Science 18 : 951-967.

Lee, B.T., Yoo, J.H., and Kim, H.D. 2001. Size effect of raw Si powder on microstructures and mechanical properties of RBSN and GPSed-RBSN bodies. Journal of Materials Science.

William, E., Lee, and Mark, W. 1997. Rainforth. Ceramic Microstructures Property Control by Processing. Chapman & Hall, London, UK,

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Published

2022-08-19

How to Cite

[1]
K. Sillapasa, S. Danchaivijit, and K. Sujirote, “Effects of Silicon Powder Size on the Processing of Reaction-Bonded Silicon Nitride”, J Met Mater Miner, vol. 15, no. 2, pp. 97–102, Aug. 2022.

Issue

Vol. 15 No. 2 (2005)

Section

Original Research Articles

License

Copyright (c) 2005 The Journal of Metals, Materials and Minerals (JMMM)

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